/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package redinftel.servlets;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import redinftel.entidades.Multimedia;
import redinftel.sesiones.MultimediaFacadeRemote;
import redinftel.sesiones.UsuarioFacadeRemote;

/**
 *
 * @author inftel
 */
public class GetMultimedia extends HttpServlet {

    @EJB
    private MultimediaFacadeRemote multimediaFacade;
    @EJB
    private UsuarioFacadeRemote usuarioFacade;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        ServletOutputStream out = response.getOutputStream();
        DataOutputStream dos = new DataOutputStream(out);
        try {
            if (request.getParameter("todos")!=null&&request.getParameter("todos").equals("si")) {
                String id = request.getParameter("idusuario");
                Collection<Multimedia> multimediaList = usuarioFacade.find(new BigDecimal(id)).getMultimediaCollection();
                Iterator iter = multimediaList.iterator();
                dos.writeInt(multimediaList.size());
                while (iter.hasNext()) {
                    Multimedia act = (Multimedia) iter.next();
                    dos.writeInt(act.getIdMultimedia().intValue());
                    dos.writeUTF(act.getTipo());
                    dos.writeUTF(act.getNombre());
                }
            } else if (request.getParameter("eliminar")!=null&&request.getParameter("eliminar").equals("si")) {
                String idmultimedia = request.getParameter("idmultimedia");
                Multimedia multimedia = new Multimedia();
                multimedia.setIdMultimedia(new BigDecimal(idmultimedia));
                multimediaFacade.remove(multimedia);
                dos.writeUTF("ok");
            } else {
                String idmultimedia = request.getParameter("idmultimedia");
                Multimedia actual = multimediaFacade.find(new BigDecimal(idmultimedia));
                byte[] cont = actual.getImagen();
                dos.writeInt(cont.length);
                for (int i = 0; i < cont.length; i++) {
                    dos.writeByte(cont[i]);
                }
            }
        } finally {
            dos.flush();
            dos.close();
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
